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Re: What is the fastest machine for Mathematica?


In article <6q3qkj$f19 at smc.vnet.net>, Christian Keysers wrote:
>We are currently running mathematica on a Silicon Graphics Ingigo 2
>machine with a 200Mhz processor and 256Mb Ram. The calculations involve
>fitting of gaussians to data set, and take two long at present (2h30min
>for each data set requiring 16 * 8 fits). Does anybody know what
>machines may bring the best speed for that kind of computations? The
>benchmark sites available in the net only contain data for relatively
>slow machines (Dec Alphas, Mac, Pentiums). We were thinking of getting
>an Origin 2000, but even these machines only get really fast with
>multiple processors (not supported by mathematica). So if anybody has a
>really fast machine, let me know!

DEC Alpha -- slow machine!?  I suspect the benchmarks (which I've never
looked at) are a bit out of date.  Newer DEC Alphas- such as the EV6
600MHz, which should be available pretty soon- should handily exceed
the speed of your Indigo2/200MHz. However, an O2000 would be no slouch
either.  Compare the specFP measures for the Alpha 600MHz and the
R10000/250MHz-- that's a decent measure for your task, which would be
primarily floating point and memory IO bound.

However, I suspect that if you really really wanted to speed execution
of your data fitting, some optimized C code could outperform
Mathematica.  There will always be some overhead associated with
running Mathematica code; I don't know how significant this will be, it
really depends on the routines you are using.

Dave
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Medical Sciences 926, Box 0446
University of California
San Francisco, CA 94143


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